公开(公告)号：US20080310554A1

公开(公告)日：2008-12-18

申请号：US12077073

申请日：2008-03-14

申请人： Massimiliano Siti ,  Alessandro Tomasoni ,  Marco Pietro Ferrari ,  Sandro Bellini ,  Oscar Volpatti

发明人： Massimiliano Siti ,  Alessandro Tomasoni ,  Marco Pietro Ferrari ,  Sandro Bellini ,  Oscar Volpatti

IPC分类号： H04L27/06

CPC分类号： H04L25/03292 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0064 ,  H04L1/0656 ,  H04L25/03331

摘要： An embodiment of an arrangement for detecting sequences of digitally modulated symbols from multiple sources. The arrangement identifies a suitable set of candidate values for at least one transmitted sequence of symbols and determines for each candidate value a set of sequences of transmitted symbols. The arrangement estimates at least one further set of sequence of transmitted symbols, calculates a metric for each sequence of transmitted symbols and selects the sequence that maximizes the metric. At the end, a-posteriori bit soft output information for the selected sequence is calculated from the metrics for said sequences. Generally, these calculations are base on the information coming from a channel state information matrix and a-priori information on said modulated symbols from a second module, such as a forward error correction code decoder.

摘要翻译： 用于检测来自多个源的数字调制符号的序列的装置的实施例。 该装置为至少一个发送的符号序列识别适当的一组候选值，并且为每个候选值确定一组发送符号的序列。 该布置估计至少一个另外的发送符号序列集合，计算每个发送符号序列的度量，并选择使度量最大化的序列。 最后，从所述序列的度量计算所选序列的后验位软输出信息。 通常，这些计算基于来自信道状态信息矩阵的信息和来自诸如前向纠错码解码器的第二模块的关于所述调制符号的先验信息。

公开(公告)号：US08432987B2

公开(公告)日：2013-04-30

申请号：US12077073

申请日：2008-03-14

申请人： Massimiliano Siti ,  Alessandro Tomasoni ,  Marco Pietro Ferrari ,  Sandro Bellini ,  Oscar Volpatti

发明人： Massimiliano Siti ,  Alessandro Tomasoni ,  Marco Pietro Ferrari ,  Sandro Bellini ,  Oscar Volpatti

IPC分类号： H04B7/02 ,  H04L27/06

CPC分类号： H04L25/03292 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0064 ,  H04L1/0656 ,  H04L25/03331

摘要： An embodiment of an arrangement detects sequences of digitally modulated symbols from multiple sources. The arrangement identifies a suitable set of candidate values for at least one transmitted sequence of symbols and determines for each candidate value a set of sequences of transmitted symbols. The arrangement estimates at least one further set of sequences of transmitted symbols, calculates a metric for each sequence of transmitted symbols, and selects the sequence that maximizes the metric. At the end, a-posteriori bit soft output information for the selected sequence is calculated from the metrics for said sequences. Generally, these calculations are based on the information coming from a channel-state-information matrix and a-priori information on the modulated symbols from a second module, such as a forward error-correction-code (ECC) decoder.

公开(公告)号：US20120051463A9

公开(公告)日：2012-03-01

申请号：US12077073

申请日：2008-03-14

申请人： Massimiliano Siti ,  Alessandro Tomasoni ,  Marco Pietro Ferrari ,  Sandro Bellini ,  Oscar Volpatti

发明人： Massimiliano Siti ,  Alessandro Tomasoni ,  Marco Pietro Ferrari ,  Sandro Bellini ,  Oscar Volpatti

IPC分类号： H04L27/06

CPC分类号： H04L25/03292 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0064 ,  H04L1/0656 ,  H04L25/03331

摘要： An embodiment of an arrangement for detecting sequences of digitally modulated symbols from multiple sources. The arrangement identifies a suitable set of candidate values for at least one transmitted sequence of symbols and determines for each candidate value a set of sequences of transmitted symbols. The arrangement estimates at least one further set of sequence of transmitted symbols, calculates a metric for each sequence of transmitted symbols and selects the sequence that maximizes the metric. At the end, a-posteriori bit soft output information for the selected sequence is calculated from the metrics for said sequences. Generally, these calculations are base on the information coming from a channel state information matrix and a-priori information on said modulated symbols from a second module, such as a forward error correction code decoder.

摘要翻译： 用于检测来自多个源的数字调制符号的序列的装置的实施例。 该装置为至少一个发送的符号序列识别适当的一组候选值，并且为每个候选值确定一组发送符号的序列。 该布置估计至少一个另外的发送符号序列集合，计算每个发送符号序列的度量，并选择使度量最大化的序列。 最后，从所述序列的度量计算所选序列的后验位软输出信息。 通常，这些计算基于来自信道状态信息矩阵的信息和来自诸如前向纠错码解码器的第二模块的关于所述调制符号的先验信息。

公开(公告)号：US08588322B2

公开(公告)日：2013-11-19

申请号：US12875100

申请日：2010-09-02

申请人： Massimiliano Siti ,  Teo Cupaiuolo ,  Alessandro Tomasoni ,  Sandro Bellini

发明人： Massimiliano Siti ,  Teo Cupaiuolo ,  Alessandro Tomasoni ,  Sandro Bellini

IPC分类号： H04B7/02

CPC分类号： H04L25/0202 ,  H04L1/06 ,  H04L25/03184 ,  H04L25/03267 ,  H04L25/03286 ,  H04L25/03318 ,  H04L25/03891 ,  H04L2025/03414 ,  H04L2025/03426

摘要： An embodiment of a method and device for detecting a signal and generating bit soft-output of a multiple-input multiple-output system is provided. The device includes at least one channel estimates pre-processing unit, one received vector processing and one detection and soft-output generation unit. The pre-processing unit calculates multiple QR Decompositions of the input channel estimation matrix. The detection and soft-output generation unit computes near optimal bit soft output information with a deterministic complexity and latency. It may implement a reduced complexity search method. Globally, embodiments of the invention may allow achieving low complexity, high data rate, scalability in terms of the dimension of the MIMO system and flexibility versus the supported modulation order, all potentially key factors for most MIMO wireless transmission applications.

摘要翻译： 提供了用于检测信号并产生多输入多输出系统的位软输出的方法和装置的实施例。 该设备包括至少一个信道估计预处理单元，一个接收向量处理和一个检测和软输出生成单元。 预处理单元计算输入信道估计矩阵的多个QR分解。 检测和软输出生成单元以确定性的复杂性和延迟计算近似最优位软输出信息。 它可以实现降低复杂度的搜索方法。 在全球范围内，本发明的实施例可以允许在MIMO系统的尺寸方面实现低复杂度，高数据速率，可扩展性以及所支持的调制阶数的灵活性，这些都是大多数MIMO无线传输应用的潜在关键因素。

公开(公告)号：US08332731B1

公开(公告)日：2012-12-11

申请号：US12612935

申请日：2009-11-05

申请人： Marco Sforzin ,  Christophe Laurent ,  Paolo Amato ,  Sandro Bellini ,  Marco Ferrari ,  Alessandro Tomasoni

发明人： Marco Sforzin ,  Christophe Laurent ,  Paolo Amato ,  Sandro Bellini ,  Marco Ferrari ,  Alessandro Tomasoni

IPC分类号： G06F11/00

CPC分类号： H03M13/13 ,  H03M13/15 ,  H03M13/152 ,  H03M13/1575

摘要： Subject matter, for example, disclosed herein relates to an embodiment of a process, system, device, or article involving error correction codes. In a particular embodiment, an error-correcting device may comprise an input port to receive an error correcting code (ECC) based, at least in part, on contents of a memory array; a nonlinear computing block to process the ECC to provide a plurality of signals representing a nonlinear portion of an error locator polynomial; and a linear computing block to process the ECC concurrently with processing the ECC to provide a plurality of signals representing the nonlinear portion of the error locator polynomial, to provide a plurality of signals representing a linear portion of the error locator polynomial.

摘要翻译： 例如，本文公开的主题涉及涉及纠错码的过程，系统，设备或物品的实施例。 在特定实施例中，错误校正设备可以包括至少部分地基于存储器阵列的内容来接收纠错码（ECC）的输入端口; 非线性计算块，用于处理ECC以提供表示错误定位器多项式的非线性部分的多个信号; 以及线性计算块，用于处理ECC同时处理ECC以提供表示误差定位多项式的非线性部分的多个信号，以提供表示误差定位多项式的线性部分的多个信号。

公开(公告)号：US09258148B2

公开(公告)日：2016-02-09

申请号：US13611911

申请日：2012-09-12

申请人： Devis Gatti ,  Alessandro Tomasoni ,  Sandro Bellini

发明人： Devis Gatti ,  Alessandro Tomasoni ,  Sandro Bellini

IPC分类号： H04L27/06 ,  H04L25/02 ,  H04L25/03

CPC分类号： H04L25/0204 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0232 ,  H04L25/0242 ,  H04L2025/03617

摘要： An embodiment of a method for channel estimation for an Orthogonal Frequency Division Multiplexing communication system, including estimating a Time Domain Least Squares channel impulse response having a given maximum number of L taps based on a channel covariance matrix Q, and for each tap l=1, . . . , L a respective channel impulse response in the time-domain ĥl, wherein the channel impulse responses in the time-domain are grouped as a channel impulse response vector in the time domain ĥ. Specifically, an updated channel-impulse-response vector in the time domain {tilde over (h)} is determined by computing for each tap l the solution of the following system: Q1:l, 1:l{tilde over (h)}l×1=ĥ1:l, wherein the updated channel-impulse-response vector in the time domain {tilde over (h)} is computed recursively via a Levinson Durbin algorithm.

摘要翻译： 一种用于正交频分复用通信系统的信道估计方法的实施例，包括基于信道协方差矩阵Q估计具有给定的最大数量的L个抽头的时域最小二乘信道脉冲响应，并且对于每个抽头l = 1 ，。 。 。 L是时域ĥ1中的相应信道脉冲响应，其中时域中的信道脉冲响应被分组为时域a中的信道脉冲响应向量。 具体地，通过对于每个抽头计算以下系统的解决方案来确定时域中的更新的信道 - 脉冲 - 响应向量{tilde over（h）}：Q1：1,1：（t（t） l×1 =ĥ1：l，其中，通过Levinson Durbin算法递归地计算时域{tilde over（h）}中的更新的信道 - 脉冲响应向量。

公开(公告)号：US20130318418A1

公开(公告)日：2013-11-28

申请号：US13477610

申请日：2012-05-22

申请人： Ferdinando Bedeschi ,  Roberto Gastaldi ,  Christophe Laurent ,  Paolo Amato ,  Sandro Bellini ,  Alessandro Tomasoni

发明人： Ferdinando Bedeschi ,  Roberto Gastaldi ,  Christophe Laurent ,  Paolo Amato ,  Sandro Bellini ,  Alessandro Tomasoni

IPC分类号： H03M13/03 ,  G06F11/10

CPC分类号： G06F11/1048 ,  G11C13/0004 ,  G11C29/028 ,  G11C2029/0411 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/19 ,  H03M13/353 ,  H03M13/3715

摘要： Subject matter disclosed herein relates to memory operations regarding error correction or error detection.

摘要翻译： 本文公开的主题涉及关于纠错或错误检测的存储器操作。

公开(公告)号：US08249206B2

公开(公告)日：2012-08-21

申请号：US12201218

申请日：2008-08-29

申请人： Edoardo Gallizio ,  Sandro Bellini ,  Alessandro Tomasoni

发明人： Edoardo Gallizio ,  Sandro Bellini ,  Alessandro Tomasoni

IPC分类号： H04B1/00

CPC分类号： H04L27/2647 ,  H04L25/0224 ,  H04L25/0242

摘要： A method of channel estimation in orthogonal frequency-division multiplexing communication employing three or more subcarriers, wherein frequency correlation exists between the subcarriers. The method includes: calculating a coarse channel estimate for each of the subcarriers, and calculating from the coarse channel estimates refined channel estimates for each of the subcarriers, wherein calculation of the refined channel estimates includes calculating the parameters of a Wiener Filter having a length of 2 L+1, where L is a positive integer, and filtering the coarse channel estimates with the Wiener Filter.

摘要翻译： 一种使用三个或更多个子载波的正交频分复用通信中的信道估计方法，其中在子载波之间存在频率相关。 该方法包括：计算每个子载波的粗信道估计，以及从粗信道估计每个子载波的精细信道估计，其中精细信道估计的计算包括计算维纳滤波器的参数，该维纳滤波器的长度为 2 L + 1，其中L是正整数，并且使用维纳滤波器对粗信道估计进行滤波。

公开(公告)号：US20090067520A1

公开(公告)日：2009-03-12

申请号：US12201218

申请日：2008-08-29

申请人： Edoardo Gallizio ,  Sandro Bellini ,  Alessandro Tomasoni

发明人： Edoardo Gallizio ,  Sandro Bellini ,  Alessandro Tomasoni

IPC分类号： H04L27/28

CPC分类号： H04L27/2647 ,  H04L25/0224 ,  H04L25/0242

摘要： A method of channel estimation in orthogonal frequency-division multiplexing communication employing three or more subcarriers, wherein frequency correlation exists between the subcarriers. The method includes: calculating a coarse channel estimate for each of the subcarriers, and calculating from the coarse channel estimates refined channel estimates for each of the subcarriers, wherein calculation of the refined channel estimates includes calculating the parameters of a Wiener Filter having a length of 2 L+1, where L is a positive integer, and filtering the coarse channel estimates with the Wiener Filter.

摘要翻译： 一种使用三个或更多个子载波的正交频分复用通信中的信道估计方法，其中在子载波之间存在频率相关。 该方法包括：计算每个子载波的粗信道估计，以及从粗信道估计每个子载波的精细信道估计，其中精细信道估计的计算包括计算维纳滤波器的参数，该维纳滤波器的长度为 2 L + 1，其中L是正整数，并且使用维纳滤波器对粗信道估计进行滤波。

公开(公告)号：US08069399B2

公开(公告)日：2011-11-29

申请号：US11450920

申请日：2006-06-09

申请人： Fabio Osnato ,  Devis Gatti ,  Alessandro Tomasoni

发明人： Fabio Osnato ,  Devis Gatti ,  Alessandro Tomasoni

IPC分类号： H03M13/03 ,  G06F11/00

CPC分类号： H04L1/0066 ,  H04L1/005 ,  H04L1/0618 ,  H04L27/2601

摘要： A method and system for decoding signals includes a transmitter configured for transmitting signals encoded with a mapping, with different and separable configurations in a real part and an imaginary part of the signal. The signals may be encoded according to a Gray or QAM mapping, and may be transmitted on a selective MIMO channel and/or multiplexed with an OFDM technique. The corresponding receiver is configured for decoding the real part and the imaginary part of the signals separately, and may include a filter for subjecting the encoded signals to a Wiener filtering and a MMSE detector for minimizing the mean-square error between the encoded signals and the result of the Wiener filtering. The receiver may also include a soft decoder for performing a soft estimation of the signals and cancelling, using the results of the soft estimation, an interference produced on the signals.

摘要翻译： 一种用于解码信号的方法和系统包括发射机，被配置为用于发射用映射编码的信号，在信号的实部和虚部具有不同的和可分离的配置。 信号可以根据Gray或QAM映射进行编码，并且可以在选择性MIMO信道上传输和/或与OFDM技术复用。 相应的接收机被配置为分别解码信号的实部和虚部，并且可以包括用于对编码信号进行维纳滤波的滤波器和用于最小化编码信号与编码信号之间的均方误差的MMSE检测器 Wiener过滤的结果。 接收机还可以包括用于执行信号的软估计的软解码器，并且使用软估计的结果取消对信号产生的干扰。